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Geology of Arizona. The geology of Arizona began to form in the Precambrian. Igneous and metamorphic crystalline basement rock may have been much older, but was overwritten during the Yavapai and Mazatzal orogenies in the Proterozoic. The Grenville orogeny to the east caused Arizona to fill with sediments, shedding into a shallow sea.
A state soil is a soil that has special significance to a particular state. Each state in the United States has selected a state soil, twenty of which have been legislatively established. These official state soils share the same level of distinction as official state flowers and birds. Also, representative soils have been selected for Puerto ...
The Unified Soil Classification System (USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil. The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol. Each letter is described below (with the exception of Pt): If the ...
Arizona is also one of the Four Corners states and is diagonally adjacent to Colorado. Arizona has a total area of 113,998 square miles (295,253 km 2), making it the sixth largest U.S. state. [1] Of this area, just 0.3% consists of water, which makes Arizona the state with the second lowest percentage of water area (New Mexico is the lowest at ...
Verde River. The Verde River (Yavapai: Haka'he:la) is a major tributary of the Salt River in the U.S. state of Arizona. It is about 170 miles (270 km) long [4] and carries a mean flow of 602 cubic feet per second (17.0 m 3 /s) at its mouth. It is one of the largest perennial streams in Arizona. [4]
The AASHTO Soil Classification System was developed by the American Association of State Highway and Transportation Officials, and is used as a guide for the classification of soils and soil-aggregate mixtures for highway construction purposes. The classification system was first developed by Hogentogler and Terzaghi in 1929, [1] but has been ...
The Casa Grande series consists of very deep, well-drained, saline-sodic soils on fan terraces and relict basin floors. These soils formed in alluvium derived from granite, rhyolite, andesite, quartzite, and some limestone and basalt. Slopes generally are 0 to 5 percent. The climate is hot and arid.
Elgin is the first location in Arizona to engage in commercial scale winemaking. In the 1970s, Gordon Dutt, Ph.D., a soil scientist from the University of Arizona, was intrigued with the similarity between the soil of the Elgin-Sonoita area and that of Burgundy, France. In partnership with A. Blake Brophy, he developed an experimental winery ...
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